Natalie has $20 to spend on 5 sandwiches. can she spend $4.39 on each sandwich? explain.

No she can't spend $4.39 for each sandwich because if you divide 20 by 5 your quotient will be 4.

No.

First let's look at how much the sandwiches should cost at a maximum for a total of $20 for 5 sandwiches.

$20/5 = $4 per sandwich. So we can not spend over $4 per sandwich.

If you take the $4.39 and multiple it by the need of 5 sandwiches, you get $21.95. 

20 - 21.95 = -$1.95   -> Meaning you are over the budget by $1.95

OR

If you look at $20/$4.39 = 4.56 sandwiches 

And 4.56 sandwiches < 5 sandwiches.

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)